Boston Industrial Solutions, Inc., introduces its latest breakthrough product: the Citrine® CAL-685 Silicone Primer. The Citrine® CAL-685 is a specialized adhesion promoter. It delivers unmatched versatility and performance. This primer is designed to optimize bonding between unvulcanized platinum-based liquid silicone rubber (LSR) and a wide range of substrates during the overmolding process.
Key benefits of Citrine® CAL-685 include:
- Superior Adhesion: Ensures reliable bonding of silicone rubber to an extensive array of materials including glass, aluminum, bakelite, nylon (PA), polyimide, and epoxy resin.
- Exceptional Durability: Provides resistance to water, alkali, oils, solvents, and harsh environmental conditions. Therefore, this product is a superior choice for longevity.
- Process Versatility: Compatible with platinum based LSR and BPO-vulcanized PSA raw silicone. Additionally, it is suitable for both primary and secondary vulcanization processes.
With its advanced formula, Citrine® CAL-685 expands the design possibilities for manufacturers across industries. This could include medical devices, automotive, consumer electronics, aerospace, and injection molding – where reliable silicone-to-substrate adhesion is critical.
“Our mission has always been to innovate and empower manufacturers with reliable, high-performance solutions,” said Bonaventure Mutuku, COO of Boston Industrial Solutions. “This silicone adhesion promoter represents a natural progression from the insights gained in developing leading silicone inks and UV ink adhesion promoters. This is a substantial advancement. It delivers unparalleled adhesion performance across diverse materials. We’ve seen it exhibit resistance in the most challenging environments.”
The new primer is available immediately worldwide through Boston Industrial Solutions and authorized distributors.
For more information about Citrine® CAL-685 Silicone Primer, please visit https://bostonindustrialsolutions.com/silicone-rubber-primers/cal-685-silicone-primer or call (781) 281-255






